Mercury 35-8M0162829 FourStroke Outboard Oil Filter This High quality OEM oil filter works with Mercury FourStroke Outboard Oil to provide the ultimate protection for your engine. See your engine service and maintenance manual for further details. It is recommended that you change your fuel filter after every 100 hours of normal use or minimally once per season. Application Information This oil filter is for the following applications MercuryMariner 25 HP FourStroke Carb MY2006 prior, 30 HP Fou